#pragma once
#include<iostream>
#include<string>
#include<cstring>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<cstdlib>
using namespace std;
class Sock{
    public:
    static int Socket()
    {
        int sock=socket(AF_INET,SOCK_STREAM,0);
        if(sock<0)
        {
            cerr<<"socket error"<<endl;
            exit(2);
        }
        return sock;
    }
    static void Bind(int sock,uint16_t port)
    {
        struct sockaddr_in local;
        memset(&local,0,sizeof(local));
        local.sin_family=AF_INET;
        local.sin_port=htons(port);
        local.sin_addr.s_addr=INADDR_ANY;
        if(bind(sock,(struct sockaddr*)&local,sizeof(local))<0)
        {
            cerr<<"bind error!"<<endl;
            exit(3);
        }
    }
    static void Listen(int sock)
    {
          if(listen(sock,5)<0)
          {
            cerr<<"listen error!"<<endl;
            exit(4);
          }
    }
    static int Accept(int sock)
    {
        struct sockaddr_in peer;
        socklen_t len=sizeof(peer);
        int fd=accept(sock,(struct sockaddr*)&peer,&len);
        if(fd>=0)
        {
             return fd;
        }
        return -1;
    }
    static void Connect(int sock,std::string ip,uint16_t port)
    {
        struct sockaddr_in server;
        memset(&server,0,sizeof(server));
        server.sin_family=AF_INET;
        server.sin_port=htons(port);
        server.sin_addr.s_addr=inet_addr(ip.c_str());
        if(connect(sock,(struct sockaddr*)&server,sizeof(server))==0)
        {
            cout<<"Connect Success!"<<endl;
        }
        else
        {
            cout<<"Connect Failed!"<<endl;
            exit(5);
        }
    }
};
